CityGML – Interoperable semantic 3D city models

Gröger, Gerhard; Plümer, Lutz

doi:10.1016/j.isprsjprs.2012.04.004

Cited by 506 publications

(377 citation statements)

References 56 publications

(61 reference statements)

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“…Improvements concerning the vertical and horizontal accuracy of inundation depth estimates can be expected from using higher resolution lidar DEMs which may achieve vertical accuracies for terrain data in the range of ±15 cm (Mandlburger et al, 2009) and thus also include details about dike crests. Improvements can also be expected as a result of the integration of more detailed information about the reference environment as for instance available from 3-D-city models (Gröger et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Social media as an information source for rapid flood inundation mapping

Fohringer

Dransch

Kreibich

et al. 2015

Nat. Hazards Earth Syst. Sci.

202

129

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Abstract. During and shortly after a disaster, data about the hazard and its consequences are scarce and not readily available. Information provided by eyewitnesses via social media is a valuable information source, which should be explored in a more effective way. This research proposes a methodology that leverages social media content to support rapid inundation mapping, including inundation extent and water depth in the case of floods. The novelty of this approach is the utilization of quantitative data that are derived from photos from eyewitnesses extracted from social media posts and their integration with established data. Due to the rapid availability of these posts compared to traditional data sources such as remote sensing data, areas affected by a flood, for example, can be determined quickly. The challenge is to filter the large number of posts to a manageable amount of potentially useful inundation-related information, as well as to interpret and integrate the posts into mapping procedures in a timely manner. To support rapid inundation mapping we propose a methodology and develop "PostDistiller", a tool to filter geolocated posts from social media services which include links to photos. This spatial distributed contextualized in situ information is further explored manually. In an application case study during the June 2013 flood in central Europe we evaluate the utilization of this approach to infer spatial flood patterns and inundation depths in the city of Dresden.

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Section: Discussionmentioning

confidence: 99%

Social media as an information source for rapid flood inundation mapping

Fohringer

Dransch

Kreibich

et al. 2015

Nat. Hazards Earth Syst. Sci.

202

129

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“…This is in contrast with computer graphics where models are simplified to their coarser counterparts in a dynamic process. Moreover, LODs of 3D city models do not differ only by the amount of data, richness of details and visual properties, but may also define the semantics, and the complexity of buildings and other city objects required for different applications (Gröger & Plümer, 2012). While researchers recognise that there are no universally agreed LODs for 3D buildings and other objects comparably to the 2D topographic maps that have official scale series (Meng & Forberg, 2007), there is still not much work on the formalisation of LOD, i.e.…”

Section: Introductionmentioning

confidence: 99%

Formalisation of the level of detail in 3D city modelling

Biljecki

Ledoux

Stoter

et al. 2014

Computers, Environment and Urban Systems

165

101

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The level of detail in 3D city modelling, despite its usefulness and importance, is still an ambiguous and undefined term. It is used for the communication of how thoroughly real-world features have been acquired and modelled, as we demonstrate in this paper. Its definitions vary greatly between practitioners, standards and institutions. We fundamentally discuss the concept, and we provide a formal and consistent framework to define discrete and continuous levels of detail (LODs), by determining six metrics that constitute it, and by discussing their quantification and their relations. The resulting LODs are discretisations of functions of metrics that can be specified in an acquisition-modelling specification form that we introduce. The advantages of this approach over existing paradigms are formalisation, consistency, continuity, and finer specification of LODs. As an example of the realisation of the framework, we derive a series of 10 discrete LODs. We give a proposal for the integration of the framework within the OGC standard CityGML (through the Application Domain Extension).

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“…For example, Brasebin et al [6] developed a model for the French regulations for local urban planning (Plan Local d'Urbanisme). Their model is based on CityGML (an open standard for 3D city models developed by the Open Geospatial Consortium (OGC) [7][8][9]), Inspire specifications for cadastral parcel [10], and COVADIS (a French standard, compliant with Inspire specifications for Land Use [11]). …”

Section: Formalisation Of the Detailed Development Plansmentioning

confidence: 99%

Automation of Building Permission by Integration of BIM and Geospatial Data

Olsson

Axelsson

Hooper

et al. 2018

IJGI

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Abstract:The building permission process is to a large extent an analogue process where much information is handled in paper format or as pdf files. With the ongoing digitalisation in society, there is a potential to automate this process by integrating Building Information Models (BIM) of planned buildings and geospatial data to check if a building conforms to the building permission regulations. In this study, an inventory of which regulations in the (Swedish) detailed development plans that can be automatically checked or supported by 3D visualisation was conducted. Then, two of these regulations, the building height and the building footprint area, were studied in detail to find to which extent they can be automatically checked by integration of BIM and geospatial data. In addition, a feasibility study of one visual criterion was conducted. One concern when automating the building permission process is the variability of content within the Industry Foundation Classes (IFC) data model. Variations in modelling methods and model content leads to differences in IFC models' content and structure; these differences complicate automated processes. To facilitate automated processes, requirements on the production of IFC models for building permission applications could be defined in the form of model view definitions or delivery specifications.

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CityGML – Interoperable semantic 3D city models

Cited by 506 publications

References 56 publications

Social media as an information source for rapid flood inundation mapping

Social media as an information source for rapid flood inundation mapping

Formalisation of the level of detail in 3D city modelling

Automation of Building Permission by Integration of BIM and Geospatial Data

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